US4800350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dielectric waveguide using powdered material
Assignee: United States Department of the Navy
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Filing: 1985-05-23
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Granted: 1989-01-24
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Expires: 2005-05-23
Abstract
Abstract A flexible low-loss dielectric waveguide is made from a flexible low-dielectric constant hollow cylinder filled with high-dielectric constant powder. Alternatively, a rigid or semi-rigid waveguide comprises a groove formed in a low-dielectric constant substrate filled with high-dielectric constant powder.
Inventors
- 👤 William B. Bridges
- 👤 William M. Bruno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:18
CPC Classifications
H; H01; H01P; H01P3/00; H01P3/16
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
163 words
A low-loss dielectric waveguide for replacing conventional electrical metallic waveguides and integrated circuits, comprising: (a) a waveguide housing made from a section of flexible low dielectric constant tubing which is operable to readily be bent to conform to any of various desired electrical waveguide and integrated circuit component shapes; (b) the interior of said section of flexible low dielectric constant tubing being entirely filled with a loose powder having low-loss and a high dielectric constant to provide a purely powdered waveguide core therein which conforms to the interior configuration of said flexible tubing; (c) a very low dielectric constant sealing means provided at opposite ends of said section of flexible low dielectric constant tubing for retaining said low-loss, high dielectric constant powder within said section of flexible low dielectric constant tubing and preventing spilling of said low-loss, high dielectric constant powder; wherein said waveguide can be bent to physically conform to the shape of various electrical waveguide and integrated circuit components as desired.
Claim 2
Dependent Claim
163 words
A low-loss dielectric waveguide for replacing conventional electrical metallic waveguides and integrated circuits, comprising: (a) a waveguide housing made from a section of flexible low dielectric constant tubing which is operable to readily be bent to conform to any of various desired electrical waveguide and integrated circuit component shapes; (b) the interior of said section of flexible low dielectric constant tubing being entirely filled with a loose powder having low-loss and a high dielectric constant to provide a purely powdered waveguide core therein which conforms to the interior configuration of said flexible tubing; (c) a very low dielectric constant sealing means provided at opposite ends of said section of flexible low dielectric constant tubing for retaining said low-loss, high dielectric constant powder within said section of flexible low dielectric constant tubing and preventing spilling of said low-loss, high dielectric constant powder; wherein said waveguide can be bent to physically conform to the shape of various electrical waveguide and integrated circuit components as desired.
Claim 3
Dependent Claim
19 words
A low-loss dielectric waveguide as in claim 1, wherein said flexible low dielectric constant tubing comprises flexible polymer tubing.
Claim 4
Dependent Claim
17 words
A low-loss dielectric waveguide as in claim 1, wherein said high dielectric constant powder is barium tetra-titanate.
Claim 5
Dependent Claim
16 words
A low-loss dielectric waveguide as in claim 1, wherein said high dielectric constant powder is nickel-aluminum-titanate.
Claim 6
Dependent Claim
17 words
A low-loss dielectric waveguide as in claim 1, wherein said high dielectric constant powder is gallium arsenide.
Claim 7
Dependent Claim
16 words
A low-loss dielectric waveguide as in claim 1, wherein said high dielectric constant powder is silicon.
Claim 8
Dependent Claim
16 words
A low-loss dielectric waveguide as in claim 1, wherein said flexible tubing is formed from Teflon.
Claim 9
Dependent Claim
115 words
A low-loss dielectric waveguide for replacing conventional electrical metallic waveguides and integrated circuits, comprising: (a) a housing consisting of a substrate of low dielectric constant material having at least one groove formed therein of desired electrical waveguide circuit configuration; (b) the interior of said at least one groove being entirely filled with a loose powder consisting solely of a low-loss and high dielectric constant homogeneous material to provide a purely powdered core therein; (c) means for retaining said high dielectric constant powder within said at least one low dielectric constant housing groove and for preventing spilling of said high dielectric constant powder therefrom; (d) means for waveguide coupling said powdered core into an electrical circuit.
Claim 10
Dependent Claim
115 words
A low-loss dielectric waveguide for replacing conventional electrical metallic waveguides and integrated circuits, comprising: (a) a housing consisting of a substrate of low dielectric constant material having at least one groove formed therein of desired electrical waveguide circuit configuration; (b) the interior of said at least one groove being entirely filled with a loose powder consisting solely of a low-loss and high dielectric constant homogeneous material to provide a purely powdered core therein; (c) means for retaining said high dielectric constant powder within said at least one low dielectric constant housing groove and for preventing spilling of said high dielectric constant powder therefrom; (d) means for waveguide coupling said powdered core into an electrical circuit.
Claim 11
Dependent Claim
15 words
A low-loss dielectric waveguide as in claim 8, wherein said substrate is made from Teflon.
Claim 12
Dependent Claim
15 words
A low-loss dielectric waveguide as in claim 8, wherein said substrate is made from polypropylene.
Claim 13
Dependent Claim
41 words
A low-loss dielectric waveguide as in claim 8, wherein a ring groove is formed in said substrate at a predetermined distance from said waveguide groove and filled with a high dielectric constant powder that is retained therein, forming a ring resonator.
Claim 14
Dependent Claim
38 words
A low-loss dielectric waveguide as in claim 8, wherein a thin layer of very low dielectric constant material is provided at ends of the groove for preventing said high dielectric constant powder from spilling from the ends thereof.
Claim 15
Dependent Claim
41 words
A low-loss dielectric waveguide as in claim 8, wherein said means for waveguide coupling to said powdered waveguide core are slots in the edges of said low dielectric constant substrate at the ends of said groove containing said powdered waveguide core.
Claim 16
Dependent Claim
26 words
A low-loss dielectric waveguide as in claim 8, wherein a low dielectric constant cover is provided to retain said high dielectric constant powder within said groove.
Claim 17
Dependent Claim
49 words
A low-loss dielectric waveguide as in claim 8 wherein various configurations of electrical waveguide circuits and components, including resonators, filters, and couplers are also made from additional powdered waveguide cores provided within additional grooves formed in said waveguide substrate that are appropriately shaped as said waveguide circuits and components.
Claim 18
Dependent Claim
18 words
A low-loss dielectric waveguide as in claim 8, wherein said low-loss high dielectric constant powder is gallium arsenide.
Claim 19
Dependent Claim
18 words
A low-loss dielectric waveguide as in claim 8, wherein said low-loss high dielectric constant powder is barium tetra-titanate.
Claim 20
Dependent Claim
17 words
A low-loss dielectric waveguide as in claim 8, wherein said low-loss high dielectric constant powder is nickel-aluminum-titanate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-01-24 | 1992-07-25 | 1993-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-24 | 1996-07-25 | 1997-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-24 | 2000-07-25 | 2001-01-24 | $7700.00 | Window Closed / Lapsed |